Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 183, 173, 153, 123, 83, ?
Option 1: 43
Option 2: 33
Option 3: 23
Option 4: 53
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Correct Answer: 33
Solution : Given: 183, 173, 153, 123, 83, ?
Subtract multiples of 10 to the previous number to obtain the next number. 183 – 10 = 173, 173 – 20 = 153, 153 – 30 = 123, 123 – 40 = 83, 83 – 50 = 33
So, the missing number is 33. Hence, the second option is correct.
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Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 3, 6, 15, 42, 123, ?
Option 1: 366
Option 2: 362
Option 3: 368
Option 4: 365
Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 31, 97, ?, 259, 355, 461
Option 1: 127
Option 2: 234
Option 3: 189
Option 4: 173
Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 12, (?), 82, 123, 168, 217
Option 1: 63
Option 2: 45
Option 3: 51
Option 4: 42
Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 8, 11, 22, ?, 50, 53
Option 1: 37
Option 2: 42
Option 3: 35
Option 4: 25
Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 83, ?, 92, 107, 101, 116
Option 1: 81
Option 2: 89
Option 3: 91
Option 4: 98
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